Evidence map›Paper›PMID 30456540›Full record

ArticlePsychopharmacology2019

Sex difference in the association of body mass index and BDNF levels in Chinese patients with chronic schizophrenia.

Fang Yang, Keming Wang, Xiangdong Du, Huiqiong Deng, Hanjing Emily Wu, Guangzhong Yin, Yuping Ning, Xingbing Huang, Antonio L Teixeira, João de Quevedo and 4 more

Open access · greenAbstract read
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In one paragraph

Article in Psychopharmacology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.8field-weighted citation impact, top 15% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 33 citations in OpenAlex.

  1. Trial
  2. Schizophrenia: from mechanism to therapy.Science China. Life sciences · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors at 7 institutions in 2 countries.

Fang YangDepartment of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA.
Keming WangHefei Fourth People's Hospital, Anhui Mental Health Center, Hefei, China.
Xiangdong DuSuzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, Suzhou, China.
Huiqiong DengDepartment of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA.
Hanjing Emily WuDepartment of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA.
Guangzhong YinSuzhou Psychiatric Hospital, The Affiliated Guangji Hospital of Soochow University, Suzhou, China.
Yuping NingThe Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), Guangzhou, China.
Xingbing HuangThe Affiliated Brain Hospital of Guangzhou Medical University (Guangzhou Huiai Hospital), Guangzhou, China.
Antonio L TeixeiraDepartment of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA.
João de QuevedoDepartment of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA.
Jair C SoaresDepartment of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA.
Xiaosi LiHefei Fourth People's Hospital, Anhui Mental Health Center, Hefei, China.
XiaoE LangDepartment of Psychiatry, The First Clinical Medical College, Shanxi Medical University, 85 Jiefang Southern Road, Taiyuan, 030001, Shanxi, China. langxiaoe@yeah.net.
Xiang Yang ZhangDepartment of Psychiatry and Behavioral Sciences, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA. zhangxy@psych.ac.cn.
The University of Texas Health Science Center at Houston · USAnhui Mental Health Center · CNGuangzhou Medical University · CNInstitute of Psychology, Chinese Academy of Sciences · CNShanxi Medical University · CNSoochow University · CNSuzhou Guangji Hospital · CN

Funding

National Natural Science Foundation of China 81371477Suzhou Key laboratory for Biological Psychiatry SZS201722Suzhou Key Medical Center for Psychiatric Diseases Szzx201509
6 · The paper itself

Abstract

RATIONALE AND

objectiveSchizophrenia displays sex differences in many aspects. Decreased brain-derived neurotrophic factor (BDNF) levels have been reported to be associated with high body weight or obesity as well as other psychopathological aspects in schizophrenia patients. This study aimed to explore sex differences in the relationship between serum BDNF levels and obesity in patients with chronic schizophrenia.

methodsWe recruited 132 Chinese patients with chronic schizophrenia (98 males and 34 females) and compared sex differences in the body mass index (BMI), obesity, serum BDNF levels, and their associations. Psychopathology symptoms were assessed using the Positive and Negative Syndrome Scale (PANSS). A regression model with various demographic and clinical variables was applied to predict the serum levels of BDNF.

resultsFemale patients had a higher rate of obesity and higher BMI, but lower BDNF levels than male schizophrenia patients. A significantly negative correlation was observed between BMI and BDNF levels only in female patients but not in male patients. The multiple regression model with demographic and clinical variables significantly predicted BDNF levels only in female patients, with a medium size effect. And only in female patients, BMI made a significant contribution to this prediction.

conclusionOur results indicate significant sex differences in the obesity, BMI, BDNF levels, and their association in chronic patients with schizophrenia, showing a significant inverse correlation between BMI and BDNF levels only in female patients. Thus, sex needs to be considered when assessing the relationship between BDNF and metabolic syndromes in schizophrenia.

Indexed as

Body Mass IndexSex CharacteristicsAdultAgedAntipsychotic AgentsBiomarkersBrain-Derived Neurotrophic FactorChinaFemaleHumansMaleMetabolic SyndromeMiddle AgedObesityPsychiatric Status Rating ScalesRandom AllocationAntipsychotic AgentsBDNF protein, humanBiomarkersBrain-Derived Neurotrophic FactorBody mass indexBrain-derived neurotrophic factorObesitySchizophreniaSex difference

Identifiers

PMID30456540
OpenAlexW2901337266

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.